Stability of the flat space in quasi-Riemannian theories of gravity

Details Stability of the flat space in quasi-Riemannian theories of gravity Stability of the flat space in quasi-Riemannian theories of gravity

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989gregr..21..551m&link_type=abstract

General Relativity and Gravitation, Volume 21, Issue 6, pp.551-564

Physics

1

Scientific paper

The most general action linear in curvature and quadratic in torsion for a quasi-Riemannian theory with tangent space groupSO(1,N-1)×SO(M) is obtained. Stability of the flat space solution of the field equations is studied, by calculating the massless and massive spectrum of excitations. It is shown that some very stringent conditions must be imposed on the parameters of the action in order to avoid instabilities.

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